Home / 143,921.30-198,692.56-99,798.56

Finding the Fourth Proportional to 143,921.30, 198,692.56 and 99,798.56

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Solution

The fourth proportional to 143,921.30, 198,692.56 and 99,798.56 is: 137,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,921.30 : 198,692.56 = 99,798.56 : x
  2. Step 2: Convert to fraction form
    143,921.30/198,692.56 = 99,798.56/x
  3. Step 3: Cross multiply
    143,921.30x = 198,692.56 × 99,798.56
  4. Step 4: Simplify right side
    143,921.30x = 19,829,231,370.71
  5. Step 5: Solve for x
    x = 19,829,231,370.71/143,921.30
  6. Step 6: Final answer
    x = 137,778.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.